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Commit 2921fd9b authored by Varun Prakash's avatar Varun Prakash Committed by Greg Kroah-Hartman
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scsi: libcxgbi: fix NULL pointer dereference in cxgbi_device_destroy() 

[ Upstream commit 71482fde704efdd8c3abe0faf34d922c61e8d76b ]

If cxgb4i_ddp_init() fails then cdev->cdev2ppm will be NULL, so add a check
for NULL pointer before dereferencing it.

Link: https://lore.kernel.org/r/1576676731-3068-1-git-send-email-varun@chelsio.com


Signed-off-by: default avatarVarun Prakash <varun@chelsio.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent f44e6a30

drivers/scsi/cxgbi/libcxgbi.c

+2 −1
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ static inline void cxgbi_device_destroy(struct cxgbi_device *cdev) 
		"cdev 0x%p, p# %u.\n", cdev, cdev->nports);

	cxgbi_hbas_remove(cdev);

	cxgbi_device_portmap_cleanup(cdev);

	if (cdev->cdev2ppm)

		cxgbi_ppm_release(cdev->cdev2ppm(cdev));

	if (cdev->pmap.max_connect)

		cxgbi_free_big_mem(cdev->pmap.port_csk);